Results of a Phase III clinical study using botulinum toxin type A to treat primary axillary hyperhidrosis, or excessive underarm sweating, show that botulinum toxin type A is safe and effective for treatment of hyperhidrosis and that it markedly improves quality of life in patients who suffer from this medical condition. "Most people don't realize that hyperhidrosis is an extremely debilitating chronic condition that affects as many as eight million people in the U.S.," said a lead researcher. "As such, the results of this 52-week study using botulinum toxin type A treatment are very exciting because they mean that we are that much closer to having the first truly effective, non-surgical treatment available to meet the needs of patients who suffer from primary axillary hyperhidrosis."